I can add that it's a plant that does for itself just fine. I added one to my yard this spring and it's grown several vines 4 to 7 feet long, without regular supplemental water...even through this year's nearly rainless spring and summer.
I have mine planted with the bottom in shade (under a park bench) and the middle in part shade (north side of a slatted wooden fence panel). It does have space to get up to some sunlight.
